I asked the Lotte hotel where I could use my US bank card to extract cash. They pointed me towards an ATM (Global Cash Service) in the underground nearby. However, as myself and several others have found, this machine has been timing out since Friday Night. I have since found a new Global Cash Service machine on the 11th floor of the Lotte Department Store (Food Court) to the right of the blue fountain. It worked great. Cheers! --Brett